Cotton-gin.



S. F. KRUPP.

COTTON GIN.

APPLICATION FILED SEPT. 12. I916.

Patented; May 21, 1918.

4 SHEETS-SHEET I s. F. KRUPP.

. COTTON-GIN.

APPLICATION FILED SEPT- IZ- I916.

4 SHEETS-SHEET z.

Patented May 21,1918.

S. F. KRUPP.

COTTON GIN.

APPLICATION FILED SEPT. 12. 1916.

Patented May 21, 1918.

4 5HEETS-SHEET 3 s. F; KRUPP.

comm em. APPLICATION FILED SEPT. 12,1916.

Patented May 21,1918.

4 SHEETS-SHEET 4;

wa fiz @6665 Ma da SMITH F. KRUPP, 0F ATLANTA, GEORGIA.

COTTON-GIN.

Specification of Letters Patent.

Patented May 21, 1918.

Application filed September 12, 1916. Serial No. 119,697.

, To all whom it may concern:

j gins 1n order to preserve and prevent 1n ury to or breaking of the long fibers. The usual form of saw gins is inapplicable to ginning long staple cotton for the reason that the ribs of these gins have both ends fastened "outside the circumference of the saws and their working faces or edges inside the circumference of the saws, and as a consequence the long fibers are thrown across injured, broken or severed by the ribs and saws at the 1 time these fibers are drawn betweenthe'ribs and the commercial value of long staple cotton is materially lessened by reason of the injury thereto. In the gin embodyingthe subject-matter of the present invention the ends of the ribs toward the direction of rota- -tion of the saws are free and inside the air cumference of the saws and the working faces, or edges slightly outside of the saw circumference so that the fibers can be caught byas many saws as the fiber w ll reach over, and instead of injuring the fibers 'theylwill readily pass over the portions'of the ribs outside of the circumference of the saws.

The'main object of the present invention" is to provide means for protecting the fiber of both long and short staplecotton, and especially long staple cotton, at the operative juncture of the saws ofthe gin with the ribs without the least injury to the fiber and thereby insure a maximum output capacity of a gin and a product of high commerical grade.

Other objects and advantages will appear in the subjoined description, and in the accompanying drawings several forms of the improvement are illustrated to adapt the same to cotton of dili'erent fiber characteristics, the gin in its organization aside from i the improvements being provided with the usual complemental parts a or devices embodied in a saw gin. Moreover, 11; w ll be understood that the improved features do not in the least interfere with or modify the construction and function of well known gin attachments other than those illustrated and hereinafter described.

In the drawings:

' Figure 1 is a transverse vertical section through a portion of a gin embodying the features of the invention.

Fig. 2 is a detail perspective view of a portion of a saw cylinder and a part of the improved rib structure associated therewith.

Fig. 3 is a detail perspective view of one of the improved ribs.

Fig. 4 is a diagrammatic plan View of a portion of the saws of a cylinder and the ribs showing the position of thecotton locks and the protection afforded the same in moving over the ribs.

Fig. 5 is a detail transverse section of a portion of the saws of the saw cylinder and the improved ribs together with the cotton! locks to illustrate the position of the latter relatively'to the ribs and saws.

Fig. 6 1s a transverse vertical section through a portion of a gin embodying a modification in. the improved structure.

Fig. 7 is a transverse vertical section through a portion of a gin showing a still further modlfication and the use of a huller chamber and roller in connection with the gin.

The numeral 5 may be of any preferred construction, and therein is mounted a saw cylinder 6 comprising aplurality of saws 7 anda shaft 8 having the usual mounting and driving means.

at the opposite extremities of the frame or casing 5 of the gin. Cooperating with the saws 7 of the cylinder 6 is an ordinary brush cylinder 9 also mounted on a shaft 10, the

saw cylinderand brush cylinder being ()PGY-j ated as usual in relative timed relation. The

brush cylinder 9 is mounted in an inclosing casing 11 as usual and is operatively positioned relatively to a lint chute or lateral 12 which receives the lint cottontherefrom and is taken from the saws 7 of the cylinder 6. In advance of the brush cylinder 9 and below the saw cylinder dis a doiling cylinder 13 which may be of any suitable construction and is provided with dofling members or devices 14: which run closely to the teeth of the saws 7. The dofler 13 is located in the ordinary hopper 15 to catch the seed and deliver the latter to the lowerportion of designates a frame which the gin. Fitted in the casing or frame 5 at an elevation above the saw cylinder '6 is a feeder 16 having an upper open inlet end 17 with two feed rollers 18 mounted therein above a main or other suitably bladed or spiked" roller 19 to straighten out the seed cotton and to regulate the feed relatively to the saws as the latter draw the cotton downwardly from the feeder. At the lower ingessentially of an approximately angular head 23 and curved arms2 1, recesses '25 being formed on opposite sides of each rib from the point-of intersection of the arm 21 with the head 23 to the free end of the arm. These "recesses 25 serve as seats for the saws 7, as clearly illustrated by Fig. 2; and in the form'of the gin as shown by Fig. 1 the heads 23 are ei'igaged by rib rods 26 secu-red in the casing 'or 'frame 5 above the saw cylinder. The arms 24 of the ribs project between the saws 7 and each arm has a laterally extended guard 27 formed as a part thereof, and the general shape or curvature of the arm is such that at the point where the guard 27 is formed the arm will stand outwardly beyond the circumference of the sawsadjacent thereto, 'the saws above the guards 27 being exposed for engagement with the cotton, as

at 28, and below the guards the arms extend rearwardly bet-ween the saws, as at 29. The

combinedguards 2-7 of thearms 24 prevent I contact'or engagement of the cotton looks with thesaws as the latter rotate and drawthe cotton locks downwardly and rearwardly toward the brush cylinder 9. The

guards 27, as shown by Fig. 1, are located "opposite the nearest approach of the periphery of the dofling devices 14 of the dotfer13 to the saws, and the increase in width of the arms 24 of the ribs at the :points where the guards 27 are formed is between the saws.

such as to permit the locks of cotton to be drawn between the ribs and the saws by the latter, but obstruct the passage of the seed It will be seen that the end of 'the'arm 24 of each rib 22 toward the direction of travel or rotation of the saw teeth is free and inside of the circumference of the-saws, and the working face'is slightly outside of the saw circumference so-tlrat the "fibers can be caught byas many saws as the length thereof, is permitted to reach and be caused to freely pass over the guards of the rib arms without injury. The teeth of the saws disappear below the surface of the ribs at the guards and the locks of lint picked up by the saws are held in a regular position and slip over the free ends of the ribs at about the point 29. The seed are exoosed to the dofler l3 and it is proposed to ispose the doiier blades or projections 14 at an angle to the plane of rotation of the saws and brush the seed from the fiber in alternate directions. The liber of the locks of cotton that are not caught with the saw teeth will slide with the seed over the high portions or guards 27 of the arms 24 of the ribs, and the part of the libel which extends below the surface of the ribs and is caugl'it by each saw serves as a loop by which the saw can drag the entire lock of cotton over the high portion or guard of the rib. This particular high portion or guard of each rib serves as an anvil. for holding the fiber and the seed against the action of the do'lfer, the doffer as hereinbefore explained serving as a means to separate the seed from the cotton. This operation of the saws relatively to the cotton locks and the movement of the latter over the guards or high portions of the arms 24 of the ribs is clearly illustrated by Figs. 4: and 5, and it will be seen in Fig. l that the cotton locks regularly traverse the rib guards and are held intact by the latter and finally carried around by the saws to be acted upon by the brush cylinder 9 which of course relieves the saws of the locks and drives the detached lint into and through the lint flue or lateral 12. In the form of the gin as shown by Fig. 1 the saw and brush cylinders revolve in a direction opposite to that in ordinary gins, the brush cylinder rotating in a clock-wise direction and the saw cylinder in a contraclock wise direction. In Fig. 5 it will be seen how the cotton locks are drawn between the ribs by the saw teeth and held while moving over the guards or high portions 27 of the ribs and also that the ribs constructed as specified prevent the passage of seed into the spaces between the saws. The feeder 16, as shown by Fig. 1, takes the place of the usual roll box of a gin, it being unnecessary in this particular construction of gin to use a roll box, but if desired the features of the invention anight be adopted in connection with an ordinary gin structure or the ribs 22 and dot-fer 13 could be used in a gin having a roll box. The main advantage of the improved .gin structure as thus far described is that it has a greater capacity in treating long staple cotton than the form of roller gin which has been ordinarily used for this purpose, in view of the fact thatthe present improved form of gin has a more rapid operation or is faster in its treatment of the cotton than the roller gin. It is also pro- :posed to modify the proportions and general dimensions of the brush and saw cylinders as well as the 'doffer 13 and the rib structures will be modified accordingly.

pose of demonstrating one practical organization for separating the lint cotton from the seed and trash or other matter that may be fed with the cotton to the improved gin.

In Fig. 6 another application of the improved features of the gin is shown, the gin in this instance embodying a roll box 30 and supporting the foregoing statement that a roll box may be used with the improvements. At the lower end of the roll box 30 is an ordinary finger board 31 which performs its usual function relatively to the saw cylinder 6 embodying as in the foregoing structure saws 7 mountedon a shaft 8. The brush cylinder 9 in this instance is disposed above theplane of the saw cylinder 6 and a lint fine 32 is disposed below the brush cylinder 9, the casing and gin frame structure 33 in this instance being modified to accommodate the change of position of the parts just specified. A doffer 34* similar l to the doffer 13 shown by Fig. 1 is mounted above the saw cylinder and the ribs 22 are reversed in this modified structure and have their heads 23 secured adjacent to the bottom of the gin casing or frame by rods 26' similar to those hereinbefore described. The ribs 22, as shown by Fig. 6, are in all respects constructed similarly to the ribs shown by Figs. 1 to 5 inclusive, and similar reference characters are applied to corresponding parts, the only difference bemg that the free end. of each rib is projected upwardly and rearwardly between the saws, as

j with the cotton into the roll box 30, the dofl'er, 34: revolving in the direction of the h arrow indicated and throwing the seed and at 34, but each rib is provided with a guard 27 similar to the guards heretofore described, and the saws are below the plane of' the guards or stand inwardly within these projecting portions of the ribs. This modified form of the gin is intended for treating short staple,cotton and separating the lint from the seed, trash, etc., that may come other matter outwardly and downwardly toward the bottom of the roll box where it passesjout, as indicated by the dottedar row 35. I The saws 7 take up locks of cotton from the cotton in the roll box below the guards 27 of the ribs 22 and the cotton fiber passes over the ribs free ofthe saws and is preserved and operated upon precisely in the samejmanner as explained in the first form of the gin as shown by Fig. 1. The lint is released from the saws'by the brush cylinder 9 and driven into and outwardly through the lint flue or lateral 32. Instead of the brush cylinder 9 any other lint removing device may be used in connection with the saws.

In Fig. 7 a further modification is shown 40, for exposure of the saws and a portion of theribs 22 relatively to the doii'er 38,

the seedbeing thrown outwardly away from the sawsby the; doffer 38 toward the lowermost portion of the inclosure 39 where a trough 4:1 is formed and provided with a feed screw or auger 42 by meansof which the seed may be conveyed longitudinally through and outwardly from the inclosure 39. A brush cylinder 9 is also shown arranged by'the saw cylinder 6 to remove the lint cotton from the saws 7 and drive it into and through a lint fine or lateral 43 similar to the fines and laterals 12 and 32 heretofore described. The shape of the ribs 22 in this instance is slightly different from the ribs heretofore disclosed. Instead of forming-the ribs 22 with theenlarged heads 23 at oneend, the ribs shown by Fig. 7 are provided with securing shanks or stems 44: which constitute the lower extremities thereof, said shanks or stems being attached to a rib rail 45. In other respects the ribs are essentially the same as those heretofore .explainedand are provided with guards 27 .the periphery of the doifer 38, which inthe present instance has working teeth or projections as in all the forms of dofi'ers hereinbefore disclosed. In the operation of this further modified form of the gin the bully cotton is deposited in the chamber 36 through an upwardly opening hopper 46 i and passes down to the spiked roller 37 which operates to throw the bully cotton up against the saws 7 which are exposed in the lower rear portion of the chamber 36, and by this means the hulls and trash are removed from the cotton, or broken, and the cotton 1s taken up by the saws from the chamber 36 clear of the hulls and trash and drawn upwardly toward the doffer 38,.and

seed, dirt and trash therefrom so that when 7 the fiber reaches a position to be removed from the saws and delivered into a lint fiue or lateral it will be in a good commercial condition, and in ginning long stale cotton of the characterhereinbefore exp ained the longfibers are protected and will not become broken or injured while moving over the saws and the output .or capacity of ginsfor treating long staple or seaisland cotton is increased as the ,ginnmg operation of this 7 kind of cotton may beexped'itiously carried on through the medium of the improvements o hereinbef'ore disclosedand as shown in the drawings. j

VVhat' is claimed. is: v v I,

1, In a cotton 'g-in, the combination with toothed devices for taking locks of cotton from cotton inbuilt, and a vdoffer,-of means having working parts outside-pf the plane of movement of the devices anfdpreventing the teeth :of the devices from coming 1nto contact ,or engagement with any of the seed and-only a small portion of the fibers, of the locks of cotton while the cotton locks are in engagement with a portion of the 1 teeth of the devices and thereby also pre-- :40

venting all of. the teeth @of the devices from V injuring the fibers of :the cotton locks while the latter are moving toward the point of removal thereof from the devices, the said means having a portion ofthe extremities thereofunattachedl I :2. In a cotton gin, the combinationwith toothed-devices for taking locks of cotton from cotton in bulk, and a doffer, of

means between -the devices having free ends in the direction of *IOlJEl-tlOIl of the devices, said means being provided with working faces having intermediate parts slightly projected outside the teeth .of portions of the devices and over whichthe locks held by said. devices have movement and the fibers thereby protected against injury or breakage while the locks are moved to ward their point of removal from said devices. 1 i a 3. In a cotton gin, the combination with saws, ofa plurality of ribs between the saws, and a doffer, each rib havingone end seeu-redand the opposite end free, the ribs having working faces having intermediate portions slightly projected outside the circumferences of the saws over which the cotton locks have movement to protect them against injury or breakage.

In :a cotton gin, the combination with saws, of a plurality of ribs between the saws, and a doil'er, reach rib having one .end in the direction of movement of the saws between the saws free and inside .of the circumference of the saws, all the ribs having intermediate parts slightly projected outside of the circumferences of the saws and over which the cotton locks have movement to protect them against injury or breakage.

In a cotton gin, a plurality of saws, a doifer, and means alternately disposed with relation to the saws and having intermediate outward projections beyond a portion of the circumferences of the saws and also provided with free extremities and over which the fibers of the locks of cotton carried by the saws have movement to 1 guard the said fibers vagainst mjury or breakage. v I

6. In a cottongm, ,a pin rahty of saws, a dofi'er, and means mterposcd between the saws and having intermediate portions thereof extending, outwardly beyond the circumferences of thesaws and also laterrally extended. to cover over .a portion of the openings between the said means and saws.

,7. In ,a ,cotton'g'in, the combination of ginning saws, means for removing the lint cotton from the saws, .a dolfer, a plurality of .ribs interposed between the saws, each rib having one endsecured and the opposite end free in the direction of movement of the saws, the ribs having working faces slightly outside ,thccircumferences of the sa-wsfland over which the cotton locks have movement to protect the fibers thereof vagainst injury or breakage, and a doller cooperating with the saws adjacent to said working faces of the ribs.

8. In .a cotton gin, the combination of saws, ribs interposed between the saws and having unattached extremities and also provided with intermediate guards projected outwardly beyond the circumference of portions of the saws and over which the cotton fiber is drawn by the saws, the

guards preventing all of the teeth of the saws from engaging and injuring the cotton fiber as the latter is moved over the ribs, and a do'li'er cooperating with the said saws and ribs adjacent to the guards.

9. Ina cotton gin, ginning saws, means having unattached extremities and also provided with intermediate projections located outside of the circumference of portions of the saws and over which the cotton fiber is moved and prevented from having contact with the saws to obviate engagement of all of the teeth of the saws with and injury to the fiber during its movement toward the point of removal from the saws.

10. In a cotton gin, a plurality of saws having means disposed between the saws and provided With unattached extremities and also with intermediate projections cooperating With the saws for preventing portions of the teeth of the saws from engaging and injuring the cotton locks during the movement of the cotton locks by the saws over the said projections, and a doffer coacting With the saws and means.

11. In a cotton gin, the combination of saws, a dofier, a plurality of ribs between the saws, each rib having recesses on 0pposite sides for adjacent saws, each rib also having one end secured and the opposite end free inthe direction of movement of the saws, the ribs having portions projected slightly outside the circumferences of the saws and also extended laterally, the cotton locks taken up by the saws moving over the said portions of the ribs extending outside the circumferences of the saws to protect the cotton fibers against injury or breakage.

In testimony whereof I have hereunto set my hand in presence of tWo subscribing Witnesses.

SMITH F. KRUPP.

Vitnesses:

S. L. GARDNER, D. L. NICHOLS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). G. 

